Indicator



Nov. '1, 1932.

Filed Feb. 18, 1930 4 Sheets-Sheet l T. BRADY Nov. 1 1932.

INDICATOR Filed Feb. 18, 1930 4 Sheets-Sheet 2 INVENTOR ATTORNEY Nov. 1, 1932. T. BRADY 1,886,079

INDICATOR Filed Feb. 18, 1930 4 Sheets-Sheet 5 4|, 25 4 41 m (BA/011% IHVENTOR fiGf+ av T ATTOR NEY NOV. 1, 1932. BRADY 1,886,079

INDICATOR Filed Feb. 18, 1930 4 Sheets-Sheet 4 INVENTOP ATTORNEY Patented Nov. 1, 1932 UNITED STATES PATENT OFFICE THOMAS! BRADY, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO OTIS ELEVATOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY INDICATOR Application filed February 18, 1930. Serial No. 429,235.

The invention relates to signalling and annunciator mechanisms, and particularly to annunciators for use in elevator installations.

It is desirable in elevator installations, particularly in those in which the starting and stopping of the elevator car are controlled by an attendant in the car, that signalling devices be provided for indicating the floors at which persons desiring to use the elevator car are located. It is also desirable that the direction in which prospective passengers desire to be taken be indicated to avoid unnecessary stopping of the car. Annunciators of various types have been devised for the purpose. One type of annunciator, for example, is provided with a pair of signalling targets for each floor served by the car. To distinguish between an up call and a down call from a particular floor one of the pair of signalling targets for that floor may be alined vith an up indicating target While the other of the pair is alined with a down indicating target, or the targets of the pairs may be distinguished from each other by colors. The signalling targets, arranged in either of th se ways, are illuminated by individual light sources upon the operation of up or down push buttons at the floors to register calls indicating that the use of the car is desired. Resetting mechanisms are also provided for effecting cancellation of the up and down signals registered.

The increases of recent years in the heights of buildings is in many cases accompanied by corresponding increase in the size of annunciators. The invention is, in part, dirooted to reducing the size of annunciators and simplifying their construction.

One feature of the invention resides in lessening the size of annunciators by closely grouping the signal registering targets on the annunciator panel.

A second feature is an annunciator in which the operating devices for registering rality of shutters selectively operable to permit illumination of individual signal targets and operable collectively to cut off the illumination of the signalling targets.

A fifth feature resides in energizing the common light source for illuminating the signal targets only when a call is to be registered.

A sixth feature resides in deenergizing the common light source for the targets upon operation of resetting mechanism for cancelling the signals registered.

A seventh feature resides in deenergizing the common light source for the targets upon the cancellation of the up signals or the down signals only in the event that all the s gnals registered are up signals or down signals respectively.

An eighth feature resides in the arrangement of the operating and resetting device for the shutters so that they are conveniently accessible for adjustments.

A ninth feature is the provision of an annunciator of simple construction, which may be cheaply manufactured, and which is reliable and economical in operation.

Other features and advantages will become apparent upon consideration of the following description and the appended claims.

The invention will be described as embodied in an annunciator for use in the elevator car of an installation serving eight floors.

The annunciator has a casing provided with a panel or cover plate having a plurality of sight openings covered by translucent indicia-bearing targets. The majority of the targets bear numerals, or other indicia, corresponding to the various floors served by the car. These targets are arranged in pairs, each pair corresponding to one of the floors served by the car. One target of the pair correspending to a particular floor is alined with a target inscribed with indicia designating Up car travel while the other is aligned with a target inscribed with indicia designating Down car travel. A hinged plate mounted in the annunciator casing beneath the panel is provided with openings each of which underlies one of the targets on the panel. The plate openings which correspond to the targets bearing floor designations are adapted to be covered by shutters movable in guides on the back of the plate. Each shutter is connected to the core of a solenoid arranged to be energized by operation of a push button at the floor to which the particular solenoid, shutter and target are related. Upon energization of a solenoid the related shutter is moved to permit a source of light mounted beneath the plate, and common to all the targets, to illuminate the target corresponding to the floor at which the passenger is located and the direction in which he desires to be taken, as determined by the push button operated.

The invention also contemplates the provision of resetting mechanism for restoring the shutters to the positions in which they cover the plate openings to cut oil? illumination of the floor designating targets. A resetting rod is provided for all the shutters corresponding to the numeralled targets alined with the up target, a similar rod being provided for the numeral bearing targets alined with the down target. Each resetting rod is arranged to be moved into contact with the cores of the corresponding solenoids to move the shutters to cover the plate openings and cut cit illumination of the related targets. The resetting rods are arranged to be operated manually by suitable resetting levers on the panel of the annunciator or to be electrically operated by electromagnets the armatures of which are connected to the resetting rods. The energization of these electromagnets may be effected by the operation of push buttons remote from the annunciator, or by switches controlled by the movement of the elevator car.

The invention further contemplates the energization of the common light source only upon the operation of a push button to signal the car operator that a prospective passenger desires to use the car and the extinguishment of the common light source upon the operation of the resetting mechanism for the shutters. Provision is also made so that if any shutters corresponding to one direction of car movement are positioned to permit illumination of the correspondingtargets when the shutters corresponding to the other direction are reset, the light source will not be extinguished unless both sets of shutters are restored to the positions in which they cover the plate openings through which the targets are illuminated.

In the draw1ngs:

Flgure 1 1s a schematic view of an elevator car showing an annunciator, embodying the present lnvention, arranged substantially flush with the interior surface of one wall of the car.

Figure 2 is a front elevation of the an porting plate is hinged to the annunciator casing.

Figure 3 is a side elevation of the annunciator with parts broken away to illustrate de tails of construction.

Figure 4 is a front elevation of the annuncia tor with the panel removed and the hinged supporting plate swung outwardly to illustrate the arrangement of the shutters and their actuating mechanism.

Figure 5 is a sectional View taken along the line 5-5 of Figure 2 illustrating the arrangement of parts within the annunciator casing.

Figure 6 is an enlarged sectional view taken along line 66 of Figure 4 illustrating details of construction.

Figure 7 is an enlarged sectional view, taken along line '4 of Figure 2, illustrating the arrangement of the resetting levers.

figure 8 is an enlarged view of a shutter and the guiding means therefor.

Figure 9 is an enlarged view showing the manner in which the targets are mounted over the openings in the annunciator panel.

Figure 10 is a schematic wiring diagram of a portion of an elevator system which embodies the annunciator mechanism of the present invention.

Referring to Figures 1 and 3, the numeral 21 designates an elevator car. One wall of the car, designated by the numeral 22, is provided with an opening to receive the easing 23 of an annunciator designated as a whole by 24. The casing 23 is provided with flanges 25 for receiving fastening devices 26 by means of which the casing is mounted on the wall of the car so that the panel 40 of the annunciator is substantially flush with the interior surface of the wall of the car.

Referring also to Figures 2, l, 5, and 6, the panel 40 is secured by suitable fastening devices to spacers 41 on the flanges 25 of casing 23. Panel 40 has a molding 42 secured there to. Qne part of molding 42 abuts wall 22 of the car when the panel is mounted on flanges 25. A plate 54 for supporting parts of the annunciator mechanism is mounted on casing 23 beneath panel 40. Hinges 55 permit the plate to be swung outwardly, when the panel is removed, to afford access to parts mounted on the back of the plate or in casing 23. Lugs 56 are provided on casing 23 to limit the inward movement of plate 54 and to receive fastening devices to secure the plate against outward movement.

As the annunciator mechanism for registering si nals which indicate that prospective passengers at the various floors desire to be taken in the down direction is substantially identical with the mechanism for registering signals indicating that prospective passengers desire to travel in the up direction only the latter will be described in detail. A series of vertically alined sight openings 43 in panel 40 are covered by translucent targets secured to panel 40 by retainers 48 ounted in the openings 48. is is shown in Figures 5 and 9, each retainer 48 has a body member 50 which is inserted in an opening 13. Retainer a8 is provided with a shou der or flange 51 abutting the face of panel 40 and lugs 52 passin through openings 53 in the target, the lugs being adapted to be bent to hold the target in position to cover the panel opening 48. Plate 5-]: has openings oh each of which undc l covering the sight openings 43 '1 panel 10. One target, desip' ated l i is inscribed with indicia design. up travel of the elevator car and will hereinafter be referred to as the up target, Gther targets, designated 45, alined with the up h ,get bear numerals or other indicia corresponding to the floors served by the car.

Shutters 61 mounted in guides 62 on the back of plate 54 are movable to cover or un cover the open s 57 which underlie the tarlie-fe vmg also to Figure 8, a notch is formed. in. one side of each guide 62 to provide shoulders 64; and Each shutter 61 has detents and 57 provided with bevelled edges its 66 and 67 cooperate 6:. and the shoulders e to latch the shutter against accidental displacement from the po sition in which it covers the opening 57 beneath a target 45 or he position in which it uncovers the opening. lVhen shutter 61 is positioned to cover opening 57 the bevelled edge 68 ct detent G6 rests on the end 70 of guide 62 and the bevelled edge 71 of detent 67 rests on the shoulder 64. l Vhen shutter 61 is positioned to uncover the opening 57, the bevelled 68 of detent 66 rests on shoulder 65 and the bevelled edge T1 of detent 67 rests on the end 752 of guide 62. The bevelled edges of the detents permit the shutter to be readily unlatched and moved to cover or uncover the opening 57 in the normal operation of the annunciator.

The shutters 61 are adapted to be moved from the position in which they cover the openings 57 beneath the related targets 45 upon energization ot the windings of individual solenoids 73 which are mounted adjacent the shutters on a bracket 74 secured to the back of plate 5a. The solenoids are mounted with their longitudinal axes substantiallyparallel to plate 54. The core 75 of each solenoid has a portion 7 6 formed to extend toward plate 5% and connected to one of the shutters 61. Solenoids 73 are mounted on bracket Tat by fastening devices 7? which also serve as stops to limit the movement of the cores 75, and hence of the shutters 61, upon the energization of the windings of the solenoids. ()no end of the winding of each solenoid is connected to an individual binding post 78 mounted on an insulating strip 80 secured to bracket 74. Each binding post 78 is electrically connected to a bus bar 81 on insulating strip 80. The other end of the winding of each solenoid is connected to an individual binding post 82 mounted on the insulating strip.

Referring to Figures 3, 1, and 7, a manually operable resetting lever 83 having a knob 84 projecting from the face of panel 40 is provided to restore the shutters (El to the positions in which they cover the plate openings 57. Lever 83 extends into the interior of casing 23 through an opening in which it is journalled in panel 40 and is biased to a neutral position by a spring 85 mounted between the rear side of the panel and a stop on the lever. Lever 83 engages the underside of lever 86 and is adapted to rock th 1 about its pivot 87 on plate A lever one end of which is pivoted on a bracket 90 plate 54 is provided with a stud 91 re on lever 86. The other end of lever 88 is pi otally connected to one end of a rod 92 whic 1 at its other end is pivotally c'onected to a lever pivoted on a bracket 9% on plate Rod extends beneath w 51 U.. no cores 75 or solenoids To and adapts o be moved into eng 'ement with the portion '70 or" each core to simultane usly move all the shutters 61 wh c 1 may be positioned to uncover openings 57 heath the numeral bearing targets into the positions in which they cover the openin s. A stop member 95 is arranged to be engaged by the shutters 61 to limit their movement by rod 92.

The construction and arrangement of parts for registering signals indicating that prospective passengers at particular floors desire to travel in the down direction is siiuilar to that described for registeri g up signals. The target bearing indieia naL. down travel is designated 16 the numeral 17 designates the which be?" 1 corresponding to the various floors and which are alined with the down target 46, Shutters are individually movable by solenoids 101 to unc ver pla e openings a? beneath the targets M. The shutters 100 are simultaneously movable by a rod 102 to cover the plate openings beneath targets 4: upon operation of a resetting lever 103 having resetting knob 104 on panel 420.

Light sources 5 supi iorted in by brackets 60, are adapted on energization to serve as a common light source for illuminating thetargets 44-, 45, a6 and through plate openin s 57. The up target and down target lo are both illuminated whenever the light source is energized but individual targets 15 and 47 are illuminated only when their respective shu ters 61 or 100 are displaced to uncover the plate openings beneath these targets. Energy is supplied to light sources 58 for illumina ing the targets 44 and 46., and target 45 or 4:7 only nuilr s upon the displacement of a shutter 61 or 100, respectiveli to uncover a plate opening beneath a target 45 or 47 bearing a numeral corresponding to one of the floors.

The supply of energy to light sources 58 is controlled by switches 106 and 107. Referring to Figures 4 and 6, switch 106 comprises a member 108 of insulating material which is secured to the core 110 of a solenoid 111 for movement therewith. One end of the winding of solenoid 111 is connected to a binding post 112 on insulating strip 80. The other end of the winding of solenoid 111 is connected to a bin ding post 113 which is electrically connected to bus bar 81. Conducting elements 114 and 115 are mounted on insulating member 108 by a fastening device 116, which also serves to connect the elements electricall Spring contact fingers 11'? and 118, supported by insulating strip 80, are connected to binding posts 122 and 123, respectively, which are also supported on insulating strip 80. Fingers 117 118 are adapted to be engaged by conducting elements 11*- and 115, respectively, when core 110 is drawn into solenoid 111 upon energization of the winding thereof. Contact fingers 117 and 118 are arranged in a circuit for light sources 58 so that energy will be supplied thereto when an electrical circuit is established through the contact fingers on energization of the winding of solenoid 111. Solenoid 111 is arranged to be en rgized concurrently with the energization of any of the solenoids 73 so that when a shutter 61 is moved to uncover a plate opening beneath a numeral bearing targe 45 the light sources will receive energy for illuminating the and also the up target 44 with WfllCll it is alined. A stud 124 carried by insulating member 108 is positioned to be engaged by rod 92 for moving the elements 114 and from on gagement with contact fingers 117 and 118, thus interrupting the circuit for light sources 58, when rod causes movement of shutters 61 to cut oil illumination of targets 45 by coverin the plate openings 57 beneath the targets.

Switch 107 is provided for energizing the light sources upon the energization of a solenoid 101 for displacing a shutter 100 to uncover an opening alined with a target 47. The construction of switch 107 is similar to that of switch 106. The contact of switch 107 are design ted 125 and 126. The switch is closed by energization of a solenoid 127. The contact lingers 125 and 126 are arrai d in the circuit for light sources 58 so that energy will be supplie c to light sources when solenoid 127 is energized concurrently with the energization of a solenoid 101 to displace a shutter 100. A stud carried by the insulating member on the core of solenoid 127 is arranged to be engaged by resetting rod 102 as the latter is moved into contact with the portions 76 of the cores connected to any shutters displaced to uncover a plate opening 57 beneath a target 47. Thus as any shutters 100 are restored to position to cut off illumination of targets 47 the circuit through fingers 125 and 126 for light sources 58 is interrupted.

it may be desirable in some cases to supply energy to light sources 58 continuously rather than only when a call signal is to be registered. In such cases the switches 106 and 107 and their associated mechanisms may be omitted. In this event, up tar et 44 and down target 46 are illuminated continuously and the respective targets 45 and 47 are illuminated upon movement of the corre sponding shutters to uncover the related plate openings 57.

Under certain conditions, as when the annunciator is mounted so that the knobs 84 and 104 of the resetting levers 83 and 103 are not conveniently accessible to the car operator, it may be des rable to effect the resetting of the shutters 61 and 100, respectively, by means of controls remote from the annunciator panel. To this end electromagnets 96 and 105, mounted on plate 54, are provided. The arma ,ires 97 or electromagnets 96 and are pivotally connected by links 98 to the levers 08 connected to resetting rods 92 and 102, respectively. The energization of the windings olectromagnets 96 and 105 may be controlled by push buttons mounted in a position conveniently accessible to the car operator, as on an operating control panel 27 in the car.

A buzzer 128, of any suitable type, is mounted in casing 23 and is arranged to be energized to give an audible signal upon the energization 01 any of the solenoids 73 or 101.

Although there is ordinarily no occasion registering up signals from the upper terminal or down signals for the lower tern inal a target 45 corresponding to the upper terminal and alined with the up target and a target 47 corresponding to the lower terminal and alined with the down target 46 are illustrated in Figure 2 in order to provide a symmetrical and pleasing appearance. However, it is to be understood that these targets may be inscribed with appropriate indicia and the necessary mechanisms added to provide for illumination thereof to register sigals.

Referring to Figure 1, a cable 28 carries conductors connected to the various electroresponsive devices in annunciator 24 to terminals in a terminal box 30. ther conductors each connected at one end to these terminals in terminal box 30 are carried by a travelling cable 31 to be connected to the contacts 01 up and down direction signalling push buttons at the various floors. A travelling cable 32 connected to outlet box 33 carries conductors leading to the controls vices of the annunciator.

r and the down target 46 respectively.

on panel 27 for controlling the operation of the car and also carries conductors for supplying energy for the operation of the electroresponsive devices carried by the car. A cable leading from outlet box 33 supplies energ to the primary winding of a trans former in terminal box 30 for operating electro-responsive devices in annunciator 24. A cable 35 carries conductors from outlet box for supplying energy to a dome light 36. The supply of energy to the primary winding of the transformer in terminal boX 30 and to dome light 36 is arranged to be controlled by. a light switch 37 on control panel 27.

The arrangement of the electrical connections for the electro-responsive devices of the annunciator mechanism of the present invention and its adaptation to an elevator system is illustrated in Figure 10. To simplify the description the operating and control circuits for the elevator car are not shown. A transformer 130 is provided to supply energy for the operation of the electro-responsive de The numerals 131, 132, 133, 134, 135, 136 and 137 designate push buttons at the first to seventh floors, respectively, adapted to be operated by prospective passengers to signal the car operator that they desire to travel in the up direction. Push buttons 142, 143, 144, 145, 146, 147 and 148 are also provided at the second to eighth floors for signalling that prospective passengers desire to travel in the down direction. Push buttons 1.50 and 151 are provided, as on the operating control panel 27 of the car, for energizing the electromagnets 96 and 105 respectively to reset the shutters for the targets and 47 alined with the up targetrii4 1e numerals 152 and 153 designate switches which may be provided to be controlled by the movement of the car for energizing magnets 96 and 105 respectively to automatically reset the shutters 61 and 100. The numerals 160 and 161 designate the wires of a suitable power source.

The operation is as follows: lVhen the elevator car is placed in service, light switch 37 is closed completing a circuit for dome light 36 and also for the primary winding of transformer 130 to supply energy to the electroresponsive devices of annunciator 24. This circuit may be traced from wire 160 through light switch 37, the dome light 36 and the primary winding of transformer 130 in parallel, to wire 161.

Assume that a prospective passenger desiring to travel in the up direction from the third floor presses the up push button 133 thereat. The operation of push button 133 completes a circuit for energizing the solenoid 73 corresponding to the third floor, the actuating solenoid 111 for switch 106, and

' the buzzer 128. This circuit may be traced from one end of the secondary winding of transformer 130, through wire 162, wire 163, solenoid 111, wire 164, the contacts of push button 133, solenoid 73 corresponding to the third floor, wire 165, the winding of buzzer 128 and wire 166 to the other crd of the secondary of transformer 130.

On energization of the solenoid 73 corresponding to the third floor its core 75 is drawn in moving the shutter 61 connected thereto as the bevelled edge 68 of detent 66 cooperates with the end 70 of guide 62 and the bevelled edge 69 of detent 67 cooperates with. the shoulder to guide the shutter 61 out of its latched position. Movement of shutter 61 in guides 62 uncovers the plate opening 57 beneath the target 45 bearing the numeral three in order to permit illumination thereof. hen the inner end of core 75 engages the fastening device 77 the movement of the core and shutter 61 is terminated. The detents 66 and 67, positioned with their bevelled edges 68 and 71 resting on shoulder and end 72 of guide 62, latch the shutter in the position in which the plate opening 57 is uncovered.

Upon energization of switch actuating solenoid 111 the core 110 is drawn into the solenoid moving the conducting elements 114 and 115 into engagement with contact fingers 117 and 118 thus closing switch 106 and thereby completing a circuit for light sources 58. This circuit may be traced from wire 162, through wire 167, switch 106, wire 168, light sources 58 to wire 166. lVhen energy is supplied to the light sources 58 the up target 44, the down target 46 and the target 45 which is inscribed with the numeral 3 and alined with up target 44 are illuminated.

Energization of the winding of buzzer 128 results in an audible signal being given to attract the attention of the car operator to the visual signal registered by the annunciator. By glancing at annunciator panel 40, the car operator may determine by the illumination of the target 45 bearing the numeral 3 and its alinement with the up target 44 that a prospective passenger at the third floor desires to travel in the up direction. Although down target 46 is also illuminated none of the floor designating targets 47 alined therewith are illuminated as shutters 100 remain positioned to cover the plate openings alined with these targets.

The solenoids 73 for moving the shutters 61 positioned beneath the targets 45 bearing numerals corresponding to the first, second and fourth to seventh floors and alined with up target 44 may similarly be displaced to permit illumination of these targets upon energization of the corresponding solenoids 73 by operation of the up push buttons at the respective floors. All of the up push buttons cause energization of solenoid 111 to close switch 106 and thus establish a circuit through contact fingers 117 and 118 for light sources 58, if switch 106 is open. The up push buttons also cause energization of buzzer 128 to give an audible signal, when the opening 57 beneath any target 45 is uncovered by opthe first, third, fourth, fifth and seventh floors are shown positioned to permit illumination of the respective targets as a result of the operation of the up push buttons at the respective floors by prospective passengers who desire to travel in the up direction.

Assume also that a prospective passenger desiring to be taken in the down direction from the fifth floor operates the down button 145 thereat. A circuit is completed for energizing the solenoid 101 corresponding to the fifth floor, the switch actuating solenoid 127 and the winding of buzzer 128. This circuit may be traced from wire 162, through wire 171, solenoid 127, wire 172, the contacts of push button 145 at the fifth floor, solenoid 101 corresponding to the fifth floor, wire 165, and the winding of buzzer 128 to wire 166.

On energization of the solenoid 101 corresponding to the fifth floor the shutter 100 covering the plate opening 57 beneath the target 47 alined with the down target 46 and bearing the numeral five is moved to permit illumination of this target, as described above for permitting illumination of a target 45 alined with the up target 44.

The energization of solenoid 127 causes the switch 107 to close for establishing a circuit through contact fingers 125 and 126 for light sources 58. This circuit may be traced from wire 167, through switch 107, wire 168, and light sources 58 to wire 166. Since light sources 58 are already energized as a result of the establishment of a circuit through switch 106, as above described, a parallel circuit for supplying energy to light sources 58 is established through switch 107. In the event that no target 45 alined with the up target 44 had been moved, and no circuit established through switch 106, the establishment of the circuit through switch 107 would result in the energization of the light sources.

The energization of the winding of buzzer 128 results in an audible signal to attract the attention of the car operator to the visual signal registered on the annunciator. The illumination of the target 47 hearing the numeral 5 and its alinement with the down target 46 indicates to the car operator that a prospective passenger at the fifth floor desires to travel in the down direction.

The shutters 100 for the targets 47 hearing numerals corresponding to the other floors and alined with down target 46 may be displaced to illuminate these targets on energization of the corresponding solenoids 101 by operation of the down push buttons the respective floors. All of thedown push buttons upon operation cause energization of solenoid 127 to close switch 107, if open, to

establish a circuit for light sources 58 and also causes energization of buzzer 128.

Although both the up target 44 and down target 46 are illuminated when either switch 106 or 107 is closed the only numeral hearing targets which are illuminated are those corresponding to the floors at which prospective passengers are located and to the direction in which theymay desire to he talren.

Assume that the car has completed a trip in the down direction and responded to all the down signals registered and that the car operator desires to cancel all the down sig nals registeredby the annuciator. The car operator moves the resetting knob 104 on the annunciator casing downwardly. The portion of resetting lever 103 within casing 23 moves upwardly and raises the lever 86 about its pivot 87. Since stud 91 on lever 88 rests on lever 86, lever 88 is raised about its pivot on bracket 90. Consequently rod 102, which is connected to lever 88, is moved transversely of plate 54 beneath the cores of solenoids 101 into contactwith the portions 76 of the cores 75 connected to any shutters 100 which are positioned to uncover the openings beneath targets 47 alined with down target 46. These'shutters are thus unlatched and moved to cover the openings 57 beneaththe targets 47, the movement of the shutters being limited as their ends engage the stop member 95.

Rod 102' also moves into contact with the stud on the insulating member carried by the core of the actuating solenoid 127 for switch 107, moving the'core to open the switch. 107 and thereby interrupting the circuit there through for li ht sources 58. Since, as de scribed above, a circuit is also established through switch 106 for light sources 58, as a result of the registration of an up signal, the light sources remain energized. Consequen ly, the up target 44 and any targets 45 alined therewith which have been illuminated by movement of the corresponding shutters 61 as a result of the operation of up push buttons at the corresponding floors remain illuminated to retain the up signals registered by the annunciator. Down target 46 also remains illuminated but as the shutters 100 corresponding to the targets 47 alined therewith have been moved to cut ofi illumination of these targets the down signals previously registered are cancelled. In the event that only down signals were registered on the annunciator, and consequently a circuit had not been established through switch 106 by registration of an up signal, the interrup ion of the circuit through switch 107 would re sult in deenergization of light sources 58.

In Figure 4 resetting rod 102 and the associated levers 103, 86 and 88 are illustrated in the positions assumed when the resetting knob 104 is deprssed to move the shutters 100 for cutting off illumination of the targets and to open the circuit for light sources 58 through switch 107. \Vhen the operator re lea es the resetting knob 10%, lever 103 is restored to neutral position by its spring 85 and levers 86 and 88 and rod 102 are restored to normal position by gravity.

The shutters 61 may similarly be moved to cut elf illumination of the targets l5 alined with up target 44, and the circuit through switch 106 for light source 58 also opened, by movementof rod 92 up n manipulation of the resetting knob 83 on panel 40.

It will he see from the above that the common light source is deencrgized when shu'ters zre reset to cut oil? illumination of targets 45 alined with the. up target or to gets 1? alined with the down on-y in the event that all the signals registered are up or down signals respectively. When targets 45 and targets illuniinated to register up signals and down signals concurrently, the respective shutters 61 and 100 for both sets targets must he rose t ii order to deenergize the light sources.

In the event that the annuziciator is mount ed so that resetting knobs and 10% a not conveniently acce ble to the car operator the resetting l s utters corresponding to the t-ir ets and alined vith the *0") target 1 I .L J. a 1d down target, respectively may be ea- 7 F 1 4 I V. n ijcctec by operation oi push i; has

151, rcspecti ly, on control operation of push button 151 to down signals cen'ipletes :1 cl t through wire L75, elect 1 the c mtacts of p sh butto for energizing elect-roma nation or" electromagnet ment of the armatiire t lever 98 and cause rod versely of plates to cut of targets 1 and open t sources 58 throu scribed.

The ope 'ation of pnslbutton 1 up signals completes a circn through ire 17% electro cont: of push butt n 1. energizing electromag let gization of electromagnct 96 the sh tte s 01 are movec to int oll' illumination and the circuit t irough switch 100 for i t somces is opened by movement of rod a. transversely of plate as ab desc The automatic cancellation of up and lown signals m2" v l T if On ener- 1e ci'lecgen, by the closing of SVvlLClEQS 1552 d L A ed to energize the electromagnet 90, and 1 6? l V "C 1 1 w- T l 1e :tively. mvitcnes 1oz. and it) may a winged on the car to be operated by cams on the hatchway wall at the upper and lower terminal floors respectively, or may be c}- erated by a or machine responsive to car inoveui so that the electromagnets 96 and 105 will be one g ued to cancel the up and when the direction of at a point heon completion of a For exan'iplc, switches arrangeo on selector 'itchcs and 153 are momenta E when the car travelling upwar downwardly, respective y, re-

' .cti l oi inoven'ient.

nal floors tron.

a i vith the present '1 l ters together with their t ting mechanism are so ed that the numeral beara be arranged very close to her 01 too annunciator panel. C01 se- 1 ly, is possible to construct a small and conveniently sized annunciator for use in an elevator installation serving a large number of floors.

ted hat all the targets ctiv ly illuminated o by a common light if lamps necessary for sour *e is limited to a.

to )rovi-Je a i k :5 each target. As a resrdt a c nsicerible saving is effected both in equipping and maintaining the annunciator.

the light sources are not continuously energized but become ene ized onlv upon the oper tion oi push buttons to register calls the a illllClfllii r is economical in operation.

It 3b also to be noted that all of the operating and resetting mechanisms for the shutters are ted by the hingec plate When 1 tne pai'iel a0 is removed and the hinged supp plate is swung outwardly the various parts are readily accessible for malnng ad- ;u or replacements.

. rion has been described registering up and down call elevator installation, it may or any 01'? the many signalling for which annunciator mechanisms are empioye( The floor designating targets have been decribed as alined with up and down targets to indicate to the car operator the direction in which prospective passengers desire to be taken as well as the floors at which they are located. However, it is to be understood that each of the pair of targets corresponding to a particular floor may be distinguished from ill) the other for this purpose by employing col ored translucent targets.

In some types of annunciators only a single row of targets, each of which corresponds to a location from which a signal is sent, are employed. it is apparent that the compact construction, close grouping of signal targets and the economies flowing from the use of a common light source for all the targets, as embodied in the annunciator mechanism described, are also of advantage in this type of annunciator.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

lVhat is claimed is:

1. In an annunciator for an elevator system having an elevator car serving a plurality of floors; a translucent up-car-travel-designating target; a plurality of translucent floordesignating targets alined with said up tar get; a translucent down-car-travel-designating target; a plurality or translucent floordesignating targets alined with said down target; a light source for illuminating all said targets; a plurality of shutters, each of said shutters being adapted to be interposed between said light source and one of said floor designating targets; individual solenoids for moving said shut-ters from their positions between their respective targets and said light source to illuminate said floor designating targets, each solenoid having a core connected to one of said shutters; a circuit for said light source; a switch for closing said circuit to energize said light source; electromagnetic means for closing said switch; a second switch for closing said circuit to energize said light source; electromagnetic means for closing said second mentioned switch; an up signalling control at each floor, except the upper terminal; each up signalling control being operable to energize one of said solenoids to illuminate the floor designating target which corresponds to the floor at which said control is located and which is alined with the up target; all of said up signalling controls being also adapted to energize said first mentioned electromagnetic means for closing said first mentioned switch to energize said light source; a down signalling control at each floor, except the lower terminal; any down signalling control being operable for energizing a solenoid to illuminate that floor designating target which corresponds to the floor at which said control is located and which is alined with the down target; all of said down signalling controls being also adapted to energize said second mentioned electromagnetic means for closing said second mentioned switch to energize said light source; means for interposing the shut ters corresponding to the floor-designating targets alined with the up target between said targets and said light source and for opening said first mentioned switch to open said circuit; and means for interposing all the shutters corresponding to' said floor designating targets alined with said down target between said targets and said light source and for opening saidsecond mentioned switch in said light source circuit; said first mentioned switch remaining closed to maintain said light source energised in the event any of the floor designating targets alined with the up targets are illuminated when said second mentioned switch is opened as the shutters corresponding to the floor designating targets alined with the down target are interposedbetween said targets and said light source; said second mentioned switch remain ing closed to maintain said light source energized for illuminating the floor designating targets alined with the down target when said first mentioned switch is opened as the shutters corresponding to the floor designating targets alined with the up target are interposed between said tar ets and said light source; both of said switches being opened to deenergize said li ht source when all of said shutters are interposed between all said floor designating targets and said light source.

In an n later for an elevator system; a panel; a plurality of translucent floordesignating targets arranged vertically on said panel in single file formation; a light source in rear of said panel for illuminating all of said targets; a plurality of shutters, one for each of said targets, mounted between said targets and said light source, each of said shutters being arranged for individual movement laterally of the line of said targets between a normal, extended, lightobscuring position and a retracted, ht-

transmitting position; an actuating rod secured to each shutter, each actuating rod having a stub portion bent at right angles thereto, the end of such stub portion being secured to the corresponding shutter so that the main portion of the actuating rod extends horizontally and laterally of the line of said targets; a solenoid surrounding each actuating rod so that the actuating rods constitute movable cores for said solenoids, the arrangement being such that encrgization of each solenoid causes the movement of its asso ciated rod and shutter from said normal, extended position to said retracted position; a member extending vertically in a plane perpendicularly intersecting the stub portions of said actuating rods, said member being positioned. between said solenoids and said stub portions; parallel links secured to the ends lll) of said member by which said member, When raised, moves in its vertical plane laterally away from said solenoids, thereby engaging the stub portions of the actuating rods for such of the shutters as are then in retracted position and, moving such shutters to their normal, extended position; manual reset mechanism associated With the lever of said parallel links for restoring the shutters Which are in retracted position to their normal, extended position; and a reset magnet having an armature connected to the upper of said parallel links for eii'ecting an automatic poW- er reset of the shutters which are in their retracted position to their normal, extended position.

In testimony whereof, I have signed my name to this specification.

THOMAS BRADY. 

